diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 4d24456e6d..ee9fbbb36c 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -20,7 +20,7 @@
 			<div class="inner">
 
 			<div id="doc-description">
-				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
+				<a href="../index.php" id="logo"><span class="site_logo"></span></a>
 				<h1>phpBB 3.3.x Changelog</h1>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
 			</div>
diff --git a/phpBB/docs/FAQ.html b/phpBB/docs/FAQ.html
index fb097911d8..5e0403e804 100644
--- a/phpBB/docs/FAQ.html
+++ b/phpBB/docs/FAQ.html
@@ -20,7 +20,7 @@
 			<div class="inner">
 
 			<div id="doc-description">
-				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
+				<a href="../index.php" id="logo"><span class="site_logo"></span></a>
 				<h1>phpBB 3.3.x FAQ</h1>
 				<p>phpBB 3.3.x frequently asked questions</p>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
diff --git a/phpBB/docs/INSTALL.html b/phpBB/docs/INSTALL.html
index 7d759b42f0..d196403f62 100644
--- a/phpBB/docs/INSTALL.html
+++ b/phpBB/docs/INSTALL.html
@@ -20,7 +20,7 @@
 			<div class="inner">
 
 			<div id="doc-description">
-				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
+				<a href="../index.php" id="logo"><span class="site_logo"></span></a>
 				<h1>phpBB 3.3.x Install</h1>
 				<p>phpBB 3.3.x Installation, updating and conversion information</p>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
diff --git a/phpBB/docs/README.html b/phpBB/docs/README.html
index 32b2d98ab4..824a604105 100644
--- a/phpBB/docs/README.html
+++ b/phpBB/docs/README.html
@@ -20,7 +20,7 @@
 			<div class="inner">
 
 			<div id="doc-description">
-				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
+				<a href="../index.php" id="logo"><span class="site_logo"></span></a>
 				<h1>phpBB 3.3.x Readme</h1>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
 			</div>
diff --git a/phpBB/docs/assets/css/stylesheet.css b/phpBB/docs/assets/css/stylesheet.css
index c090ab7e07..b240a90d58 100644
--- a/phpBB/docs/assets/css/stylesheet.css
+++ b/phpBB/docs/assets/css/stylesheet.css
@@ -104,14 +104,14 @@ h4 {
 	border-top: 1px solid #ccc;
 }
 
-code { 
-	color: #006600; 
-	font-weight: normal; 
-	font-family: 'Courier New', monospace; 
-	border-color: #D1D7DC; 
-	border-width: 1px; 
-	border-style: solid; 
-	background-color: #FAFAFA; 
+code {
+	color: #006600;
+	font-weight: normal;
+	font-family: 'Courier New', monospace;
+	border-color: #D1D7DC;
+	border-width: 1px;
+	border-style: solid;
+	background-color: #FAFAFA;
 	padding: 0 4px;
 }
 
@@ -154,6 +154,14 @@ a#logo:hover {
 	text-decoration: none;
 }
 
+.site_logo {
+	background-image: url("../images/site_logo.svg");
+	background-repeat: no-repeat;
+	display: inline-block;
+	width: 149px;
+	height: 52px;
+}
+
 #doc-description {
 	float: left;
 	width: 70%;
diff --git a/phpBB/docs/assets/images/site_logo.gif b/phpBB/docs/assets/images/site_logo.gif
deleted file mode 100644
index 2517fbedd6..0000000000
Binary files a/phpBB/docs/assets/images/site_logo.gif and /dev/null differ
diff --git a/phpBB/docs/assets/images/site_logo.svg b/phpBB/docs/assets/images/site_logo.svg
new file mode 100644
index 0000000000..4ce8903417
--- /dev/null
+++ b/phpBB/docs/assets/images/site_logo.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 291 96">
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L75.2669848,25.8876404 C75.7703581,25.0247148 76.4714746,24.1438247 77.3703555,23.2449438 C78.2692364,22.3460629 79.2579906,21.5191049 80.3366477,20.7640449 C81.4153048,20.008985 82.6018098,19.3797778 83.8961982,18.8764045 C85.1905867,18.3730312 86.5209105,18.1213483 87.8872095,18.1213483 C95.437809,18.1213483 101.298425,20.2966075 105.469232,24.647191 C109.640039,28.9977746 111.725412,35.3078238 111.725412,43.5775281 L111.725412,77.6629213 L106.979344,77.6629213 Z M174.372172,46.8134831 C174.372172,51.4876638 173.796897,55.7842501 172.646329,59.7033708 C171.495762,63.6224915 169.823868,67.0202103 167.630599,69.8966292 C165.437329,72.7730481 162.704772,75.0022393 159.432846,76.5842697 C156.160919,78.1663 152.403654,78.9573034 148.160936,78.9573034 C144.924965,78.9573034 142.030612,78.1483227 139.47779,76.5303371 C136.924968,74.9123515 134.929482,72.8449564 133.491273,70.3280899 L133.491273,96 L128.960936,96 C127.666547,96 126.408133,95.7662945 125.185655,95.2988764 C123.963177,94.8314583 122.884536,94.1662964 121.9497,93.3033708 C121.014864,92.4404451 120.259815,91.3977589 119.684531,90.1752809 C119.109248,88.9528029 118.82161,87.5505697 118.82161,85.9685393 L118.82161,50.8044944 C118.82161,45.9864928 119.378908,41.5640651 120.49352,37.5370787 C121.608132,33.5100922 123.351935,30.0584413 125.724981,27.1820225 C128.098026,24.3056036 131.118221,22.0764124 134.785655,20.494382 C138.453089,18.9123516 142.839562,18.1213483 147.945205,18.1213483 C151.828371,18.1213483 155.387886,18.930329 158.623857,20.5483146 C161.859828,22.1663002 164.646317,24.3056047 166.983408,26.9662921 C169.320498,29.6269796 171.13621,32.6831288 172.430599,36.1348315 C173.724987,39.5865341 174.372172,43.1460491 174.372172,46.8134831 Z M159.486779,50.588764 C159.486779,43.6853587 158.354206,38.6876559 156.089026,35.5955056 C153.823846,32.5033553 150.354218,30.9573034 145.680037,30.9573034 C141.653051,30.9573034 138.578924,32.5213327 136.457565,35.6494382 C134.336206,38.7775437 133.275543,42.8584018 133.275543,47.8921348 C133.275543,53.7168831 134.587889,58.2112201 137.212621,61.3752809 C139.837353,64.5393417 143.306982,66.1213483 147.62161,66.1213483 C151.145223,66.1213483 154.003621,64.7011378 156.196891,61.8606742 C158.39016,59.0202105 159.486779,55.2629447 159.486779,50.588764 Z M232.59646,54.7955056 C232.59646,58.5348502 231.913321,61.8426822 230.547022,64.7191011 C229.180723,67.59552 227.329056,70.022462 224.991966,72 C222.654875,73.977538 219.958273,75.4696579 216.902078,76.4764045 C213.845883,77.4831511 210.627937,77.9865169 207.248145,77.9865169 L199.266123,77.9865169 C185.531223,77.9865169 178.663876,72.1259013 178.663876,60.4044944 L178.663876,6.79550562 C179.526801,6.50786373 180.749261,6.16629411 182.331291,5.77078652 C183.913322,5.37527892 185.62117,4.99775461 187.454887,4.63820225 C189.288604,4.27864989 191.158248,3.99101231 193.063876,3.7752809 C194.969503,3.55954948 196.677351,3.45168539 198.187471,3.45168539 L207.14028,3.45168539 C210.663893,3.45168539 213.899816,3.9011191 216.848145,4.8 C219.796475,5.6988809 222.349258,6.99324998 224.506572,8.68314607 C226.663886,10.3730422 228.33578,12.4224599 229.522303,14.8314607 C230.708825,17.2404615 231.302078,19.9550411 231.302078,22.9752809 C231.302078,27.0741778 230.259392,30.4359419 228.173988,33.0606742 C226.088584,35.6854064 223.212209,37.5370733 219.544775,38.6157303 C221.414447,39.1191036 223.140272,39.9460617 224.722303,41.0966292 C226.304333,42.2471968 227.688589,43.5595432 228.875112,45.0337079 C230.061634,46.5078725 230.978479,48.1078565 231.625673,49.8337079 C232.272868,51.5595592 232.59646,53.2134752 232.59646,54.7955056 Z M216.52455,24.2696629 C216.52455,22.6876325 216.18298,21.3393314 215.499831,20.2247191 C214.816681,19.1101068 213.935791,18.2292167 212.857134,17.5820225 C211.778477,16.9348282 210.556017,16.4674172 209.189718,16.1797753 C207.823419,15.8921334 206.457141,15.7483146 205.090842,15.7483146 L199.589718,15.7483146 C198.654882,15.7483146 197.612196,15.8382013 196.461628,16.0179775 C195.311061,16.1977537 194.23242,16.3595498 193.225673,16.5033708 L193.225673,33.2224719 L204.551516,33.2224719 C207.859398,33.2224719 210.681841,32.5213553 213.018932,31.1191011 C215.356022,29.7168469 216.52455,27.4337237 216.52455,24.2696629 Z M217.711067,55.2269663 C217.711067,51.1999799 216.686358,48.4314682 214.636909,46.9213483 C212.587461,45.4112284 209.40547,44.6561798 205.090842,44.6561798 L193.333539,44.6561798 L193.333539,59.8651685 C193.333539,61.159557 193.944768,62.2561753 195.167246,63.1550562 C196.389724,64.0539371 197.935776,64.5033708 199.805449,64.5033708 L205.845898,64.5033708 C209.872885,64.5033708 212.857124,63.6584354 214.798707,61.9685393 C216.74029,60.2786432 217.711067,58.0314747 217.711067,55.2269663 Z M290.928613,54.7955056 C290.928613,58.5348502 290.245474,61.8426822 288.879175,64.7191011 C287.512876,67.59552 285.661209,70.022462 283.324119,72 C280.987028,73.977538 278.290426,75.4696579 275.234231,76.4764045 C272.178036,77.4831511 268.960091,77.9865169 265.580299,77.9865169 L257.598276,77.9865169 C243.863376,77.9865169 236.996029,72.1259013 236.996029,60.4044944 L236.996029,6.79550562 C237.858955,6.50786373 239.081414,6.16629411 240.663445,5.77078652 C242.245475,5.37527892 243.953323,4.99775461 245.78704,4.63820225 C247.620757,4.27864989 249.490401,3.99101231 251.396029,3.7752809 C253.301656,3.55954948 255.009505,3.45168539 256.519624,3.45168539 L265.472433,3.45168539 C268.996047,3.45168539 272.231969,3.9011191 275.180299,4.8 C278.128628,5.6988809 280.681411,6.99324998 282.838726,8.68314607 C284.99604,10.3730422 286.667933,12.4224599 287.854456,14.8314607 C289.040979,17.2404615 289.634231,19.9550411 289.634231,22.9752809 C289.634231,27.0741778 288.591545,30.4359419 286.506141,33.0606742 C284.420738,35.6854064 281.544362,37.5370733 277.876928,38.6157303 C279.7466,39.1191036 281.472426,39.9460617 283.054456,41.0966292 C284.636486,42.2471968 286.020742,43.5595432 287.207265,45.0337079 C288.393788,46.5078725 289.310632,48.1078565 289.957827,49.8337079 C290.605021,51.5595592 290.928613,53.2134752 290.928613,54.7955056 Z M274.856703,24.2696629 C274.856703,22.6876325 274.515133,21.3393314 273.831984,20.2247191 C273.148835,19.1101068 272.267944,18.2292167 271.189287,17.5820225 C270.11063,16.9348282 268.888171,16.4674172 267.521872,16.1797753 C266.155573,15.8921334 264.789294,15.7483146 263.422995,15.7483146 L257.921872,15.7483146 C256.987035,15.7483146 255.944349,15.8382013 254.793782,16.0179775 C253.643214,16.1977537 252.564573,16.3595498 251.557827,16.5033708 L251.557827,33.2224719 L262.883669,33.2224719 C266.191551,33.2224719 269.013995,32.5213553 271.351085,31.1191011 C273.688175,29.7168469 274.856703,27.4337237 274.856703,24.2696629 Z M276.04322,55.2269663 C276.04322,51.1999799 275.018511,48.4314682 272.969063,46.9213483 C270.919614,45.4112284 267.737624,44.6561798 263.422995,44.6561798 L251.665692,44.6561798 L251.665692,59.8651685 C251.665692,61.159557 252.276922,62.2561753 253.4994,63.1550562 C254.721878,64.0539371 256.26793,64.5033708 258.137602,64.5033708 L264.178051,64.5033708 C268.205038,64.5033708 271.189278,63.6584354 273.13086,61.9685393 C275.072443,60.2786432 276.04322,58.0314747 276.04322,55.2269663 Z"/>
+    </g>
+</svg>
diff --git a/phpBB/docs/auth_api.html b/phpBB/docs/auth_api.html
index 960fa76417..c011fdc27f 100644
--- a/phpBB/docs/auth_api.html
+++ b/phpBB/docs/auth_api.html
@@ -20,7 +20,7 @@
 			<div class="inner">
 
 			<div id="doc-description">
-				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
+				<a href="../index.php" id="logo"><span class="site_logo"></span></a>
 				<h1>Auth API</h1>
 				<p>This is an explanation of how to use the phpBB auth/acl API</p>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
diff --git a/phpBB/docs/coding-guidelines.html b/phpBB/docs/coding-guidelines.html
index ffa2112771..8b4cc2a814 100644
--- a/phpBB/docs/coding-guidelines.html
+++ b/phpBB/docs/coding-guidelines.html
@@ -20,7 +20,7 @@
 			<div class="inner">
 
 			<div id="doc-description">
-				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
+				<a href="../index.php" id="logo"><span class="site_logo"></span></a>
 				<h1>Coding Guidelines</h1>
 				<p>Rhea coding guidelines document</p>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>